HMC305ALP4 Datasheet, PDF (1/8 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

HMC305ALP4 / 305ALP4E
v02.0311
0.5 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz
8
Typical Applications
The HMC305ALP4(E) is ideal for:
• Cellular/3G Infrastructure
• Fixed Wireless, WiMax & WiBro
• Test Instrumentation
Features
0.5 dB LSB Steps to 15.5 dB
CMOS Compatible Serial Data Interface
SPI Compatible Serial Output
±0.3 dB Typical Bit Error
24 Lead 4x4mm QFN Package: 16mm^²
Included in the HMC-DK004 Designer’s Kit
Functional Diagram
General Description
The HMC305ALP4(E) is a broadband 5-bit positive
control GaAs IC digital attenuator with CMOS com-
patible serial-to-parallel driver package in a leadless
QFN 4x4 mm SMT package. Covering 0.7 to 3.8 GHz,
the insertion loss is typically less than 1.5 to 2 dB.
The attenuator bit values are 0.5 (LSB), 1, 2, 4, and
8 dB for a total attenuation of 15.5 dB. Attenuation
accuracy is excellent at ±0.25 dB typical with an IIP3
of up to +52 dBm. Five bit serial control words are
used to select each attenuation state. A single
Vcc bias of +3V to +5V applied through an external
5 kOhm resistor is required.
8-1
Electrical Specifications, T_A = +25° C, Vcc = +3V to +5V
Parameter
Frequency
Min.
Typical
Max.
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.8 GHz
1.2
1.5
1.5
2.0
1.8
2.3
2.0
2.5
Attenuation Range
0.7 - 3.8 GHz
15.5
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
17
1.4 - 2.3 GHz
18
2.3 - 2.7 GHz
19
2.7 - 3.8 GHz
15
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (Latch Enable to 10/90% RF)
Vcc = 5V
Vcc = 3V
Vcc = 5V
Vcc = 3V
0.7 - 0.9 GHz
0.9 - 2.2 GHz
2.2 - 3.8 GHz
0.7 - 3.8 GHz
0.7 - 3.8 GHz
0.7 - 3.8 GHz
± (0.5 +5% of Atten. Setting) Max
± (0.3 +4% of Atten. Setting) Max
± (0.5 +5% of Atten. Setting) Max
25
23
52
48
750
830
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]